3DMark03 simulates DirectX 9 games, which are the games available today on the market. So we used this software to see how the motherboard being reviewed acts running DirectX 9.0 games. You can check the results below.

Motherboard	3Dmark03 (Build 3.6.0	%
ECS KN1 SLI Extreme (nForce4 SLI)	13831	+65.96
DFI LANParty UT nF4 SLI-D (nForce4 SLI) Normal	8364	+0.36
ASUS A8N-SLI Deluxe (nForce4 SLI) Normal	8353	+0.23
Foxconn WinFast NF4UK8AA-8EKRS (nForce4 Ultra)	8348	+0.17
ECS KN1 SLI Extreme (nForce4 SLI) Normal	8334
ECS KN1 Extreme (nForce4 Ultra)	8327	-0.08
Albatron K8SLI (nForce4 SLI) Normal	8322	-0.14
MSI K8N Diamond Plus (nForce4 SLI X16) Normal	8312	-0.26
ULi AP970A (ULi M1697)	8283	-0.62
ULi AP9567A (ULi M1695)	8239	-1.15
ULi AP9567A (ULi M1695) - AGP	8167	-2.04

All motherboards achieved a similar performance without using SLI configuration.

We included ECS KN1 SLI Extreme results with SLI for you to compare the performance difference you may expect when enabling SLI on this motherboard. Enabling SLI we had a 65.96% performance increase on this test.

Comparing the results among SLI-enabled motherboards (see table below), ECS KN1 SLI Extreme achieved a performance similar to other motherboards we tested.